Navigation Links
Glowing beacons reveal hidden order in dynamical systems
Date:10/19/2011

e measurement of the same variable on a collection of particles provided the system considered is in a state of equilibrium. However, as Krger points out, "although diffusive processes have been investigated for the past 150 years, the principle of ergodicity has not yet been experimentally verified." This is because it has so far been possible to quantify diffusive processes only by means of ensemble measurements i.e. measurements of many particles simultaneously. One of the most informative methods for this purpose is pulsed-field gradient nuclear magnetic resonance (PFG-NMR), a technique for which Krger and his group are well known. The actual trajectory of a single particle, on the other hand, could not be observed directly. "With the development of single-molecule spectroscopy and single-molecule microscopy, we can now follow the trajectories and therefore monitor the diffusion behavior of single molecules," Bruchle explains. Optical tracking methods visualize molecules on the basis of their fluorescence, making it possible for their positions to be localized and monitored with a precision of a few nanometers.

This still leaves one problem to be solved - successful application of the two methods requires very different, indeed apparently conflicting, conditions. NMR measurements need high concentrations of molecules with large diffusion coefficients, while single-molecule spectroscopy works best with extremely dilute solutions of species with small diffusion coefficients. By using particular organic dyes with high fluorescence yields in combination with porous silicate glasses containing networks of nanometer-sized channels in which the dye molecules can diffuse, the researchers were able to create conditions that were compatible with both methods. This experimental set-up allowed them to perform single-molecule and ensemble measurements on the same system.

When the two teams compared their data, they found that the diffusion coefficients
'/>"/>

Contact: Dr. Kathrin Bilgeri
kathrin.bilgeri@lmu.de
49-892-180-6938
Ludwig-Maximilians-Universitt Mnchen
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Glowing hands in the waiting room improves kids handwashing
2. TF beacons may light path to new cancer tests and drugs
3. Researchers use nanoparticles as destructive beacons to zap tumors
4. From tropics to poles: Study reveals diversity of life in soils
5. Genetic study of cave millipedes reveals isolated populations and ancient divergence between species
6. Genomic sequence and comparison of 2 macaques reveal new insights into biomedical research
7. Study reveals new role for RNA interference during chromosomal replication
8. Contamination of UK mobile phones and hands revealed
9. Tiny fossil fragment reveals giant-but-ugly-truth
10. Australias endangered bettong reveals how weather effects species distribution
11. University of California Santa Barbara study reveals how gas, temperature controlled bacterial response to Deepwater Horizon spill
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... 30, 2014  Aware, Inc. (NASDAQ: AWRE ... previously announced on June 26, 2014 that its Board ... $1.75 per share, or approximately $40 million in total.  ... 2014 and a payment date of July 24, 2014.  ... had set an ex-dividend date for this special cash ...
(Date:7/10/2014)... 2, 2014 It is a great honor ... appointment of the world-renowned Thoracic and Cardiovascular surgeon, Mark ... Dr. Ginsburg, with over 34 years of experience, ... and Good Samaritan Regional Medical Center. Dr. Ginsburg has ... 1980,s and is considered an expert in the implantation ...
(Date:7/10/2014)... 3, 2014 Research and Markets ( ... "Global Gesture Recognition & Touch-Less Sensing (2D, ... 2020" report to their offering ... Recognition & Touch-Less Sensing Market to Grow Exponentially. ... while, but the companies were unable to leverage ...
Breaking Biology News(10 mins):NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2Avery Biomedical Devices, Inc. announces the appointment of Mark E Ginsburg, M.D. to its Board of Directors 2Global Gesture Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, Capacitive) Market - Forecasts to 2020 2
... NJ, March 20, 2013, John Wiley & Sons, Inc., ... Society (SPPS); a partnership which began over sixty years ... research journal Physiologia Plantarum , an international thought ... partnership began in 1948 when the society, known then ...
... uncovered from poorly explored areas of the Peruvian jungles. The ... before a dark brown and black background. It is assumed ... a slight difference in altitude ranges, which makes their biological ... was published in the open access journal Zookeys ...
... of the natural motors that are serving as models for ... therapeutic DNA, RNA or drugs into individual diseased cells. Their ... bacteria-killing virus and a new way to move DNA ... journal ACS Nano . Peixuan Guo and colleagues ...
Cached Biology News:The Scandinavian Plant Physiology Society and Wiley extend over 60 years of partnership 2Peru surprises with 2 new amazing species of woodlizards 2
(Date:7/10/2014)... POINT, Ind. , July 10, 2014 ... expanded its use of capnography for respiratory ... growing group of healthcare leaders in embracing ... measures how effectively patients are breathing and ... depression occurs. By measuring the amount of ...
(Date:7/10/2014)... PROVO, Utah , July 10, 2014 ... genome annotation and interpretation, today announced an ... sequencing (NGS) analytics for Lineagen,s NextStep Dx ... evaluation of neurodevelopmental and neurological disorders, currently ... chromosomal microarray (CMA) testing service used by ...
(Date:7/10/2014)... According to the International Atomic Energy Agency (IAEA) ... terrorists acquiring sufficient quantities of plutonium or highly ... explosive device. The IAEA also notes that most ... quantities, which can be challenging to detect with ... study appearing this week in the Journal ...
(Date:7/10/2014)... in the journal PNAS (Proceedings of the National ... day and sleep deprivation have a significant effect on ... at the best time of day to test for ... administering medicines effectively. , Researchers from the University of ... the links between sleep deprivation, body clock disruption and ...
Breaking Biology Technology:Franciscan St. Anthony Health-Crown Point Underscores Patient Safety Commitment Through Expanded Use of Capnography 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 3Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 4Sensitive detection method may help impede illicit nuclear trafficking 2Time of day crucial to accurately test for diseases, new research finds 2
... , RESEARCH TRIANGLE PARK, N.C. , May 4 ... therapeutics, announced today that Kenneth I. Moch has ... Chimerix as Chief Operating Officer in July 2009 , ... and financing biomedical companies.  Mr. Moch will also join the ...
... May 4 PharmAthene, Inc. (NYSE Amex: PIP ), ... today announced that the Company,s Interim CEO, Eric I. Richman ... the critical interrelationship between government, academia and industry in the development ... , , ...
... Packing Record Tetrahedral dice, which have four ... yet tested, according to research performed by a collaboration ... revelation is the result of a series of experiments ... and adding more dice until the containers were completely ...
Cached Biology Technology:Chimerix Names George Painter, Ph.D., Chairman of the Board and Chief Scientific Officer; Appoints Kenneth I. Moch President and Chief Executive Officer 2Chimerix Names George Painter, Ph.D., Chairman of the Board and Chief Scientific Officer; Appoints Kenneth I. Moch President and Chief Executive Officer 3Chimerix Names George Painter, Ph.D., Chairman of the Board and Chief Scientific Officer; Appoints Kenneth I. Moch President and Chief Executive Officer 4PharmAthene CEO To Participate on Biosecurity Panel at the 2010 BIO International Conference 2Densest dice packing and computing with molecules 2
SHEEP ANTI BOVINE BETA-LACTOGLOBULIN A...
Rabbit polyclonal to Somatostatin 28 ( Abpromise for all tested applications). entrezGeneID: 6750 SwissProtID: P61278...
... component of the COP9 signalosome complex (CSN), ... developmental processes. The CSN complex is an ... pathway by mediating the deneddylation of the ... The complex is also involved in phosphorylation ...
... STAR3000 HISTAR detection systems provide linking ... used with species specific primary antibodies ... specimens. Visualisation is accomplished using an ... novel polymer labelling technology. Secondary antibodies ...
Biology Products: